Operating Systems General Concepts Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Operating Systems General Concepts Interview Questions

Questions Answers Views Company eMail

What is Difference between thread and process?

AirTies, Azingo, Bloomberg, Encora, Goldman Sachs, HCL, HP, MES, Microsoft, Samsung,

28 268991

How to communicate between difference process?

HP, IBM,

2 11763

What is the best way of communication in multi process environment? ex: getting log from different applications from multi servers?

HP,

1 4929

What is scheduling and How it effects the processor efficiency?

HP,

2 5881

What is virtual memory, if OS didt have that concept What are the problems can arise?

HP,

6 16970

What is the best suited algorithm to avoid internal fragmentation?

HP,

2 9958

How to escape from external fragmentation?

HP,

2 6019

What is difference in managing processes in windows, unix, RTOS?

HP,

2850

What is the difference between mutex and semaphore?

HP, Microsoft,

14 62006

What are counting semaphores?

HP, IBM,

4 17376

which is best among semaphores and mutexes?

HP,

2 7787

which is best among pipes, queues, shared memory and why?

HP,

2 7279

What are named pipes?

HP,

3 7220

What is the signal?

HP,

1 5749

What is the highest priority software interrupt?

HP,

1 6165

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Un-Answered Questions { Operating Systems General Concepts }

What are the different phases of compiler? What happens in lexical phase?

1189

Explain the Difference between Process and a Thread.

1061

Explain about assembler and the functions executed by them?

1096

When designing the file structure for an operating system, what attributes are considered?

1062

Explain trashing?

999

What kind of operations are possible on a semaphore?

1078

What is significance of semaphores? What are the different types of semaphores?

1150

Which is faster shared memory or message passing?

1047

What are the states of a process?

1099

How does the system detect thrashing?

1184

Explain thread.

1115

Can I upgrade my cpu from 32 to 64 bit?

982

What is the operating system?

1075

what is difference between xp & 2003?

1983

Does a clean install erase everything?

940

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